Slider for slide fasteners



Nov. 25, 1952 N. J. Poux SLIDER FOR SLIDE FASTENERS Filed Aug. 12, 1950izhmlz IiVVENTOR. NOEL J. POLJX ATTOQNEY Patented Nov. 25, 1952 SLIDERFOR SLIDE FASTENERS Noel J. Poux, Meadville, Pa., assignor to Talon,Inc., a corporation of Pennsylvania Application August 12, 1950, SerialNo. 179,038

3 Claims. 1

This invention relates to slide fasteners, and particularly to animprovement in or a modification of the type of automatic lock sliderdescribed and claimed in the patent to Norton et al., No. 1,966,457,issued July 1'7, 1934.

The lock slider of the above mentioned patent has been used successfullyfor many years and is satisfactory for most purposes. In someapplications of the fastener, however, for example in garments, apendant or other decorative or ornamental device is oftentimes attachedto the pull of the slider so as to be suspended therefrom. Such apendant or device is sometimes relatively heavy and the weight thereofin such suspended position tends to move by a camming action the lockingmember to its unlocked position thereby causing the slider to be movedunintentionally along the fastener to open the same. Naturally, such acondition is undesirable for it defeats the purpose for which the lockon the slider is intended. It is to a means for preventing suchaccidental unlocking of the slider that the present invention relates.

Accordingly, it is the general object of this invention to provide animproved lock slider which, while retaining all of the advantages andfunctions of the slider of the Norton et a1. patent, will overcome theabove mentioned difficulty.

It is a more specific object of the present invention to provide meansincorporated with the aforementioned automatic lock slider which willfunction to hold the pull member in a suspended position out of operableengagement with the locking member whenever the pull is released.

It is another object of the invention to provide an improved automaticlock slider having means incorporated therewith for overcoming theaforementioned difliculty in a simple and effective manner, and yetwhich will not add materially to the cost of manufacture thereof.

Fig. 4 is a sectional view taken on line 4-4 of Fig. 1;

Fig. 5 is a sectional view taken on line 5-5 of Fig. 1;

Fig. 6 is a plan view of the slider body with the locking member andpull removed; and

Fig. 7 is a side view of the fastener, similar to Fig. 2, showing thelocking member in its unlocked position.

Referring more particularly to the drawings, my improvement is shownillustrated with a conventional type slide fastener of the typedisclosed in the aforesaid Norton et a1. patent, having a pair ofstringer tapes 2 with a series of spacedapart interlocking fastenerelements 3 attached to their adjacent edges. A slider body 4 is providedfor longitudinal movement along the fastener for opening and closing thesame, and comprises spaced-apart upper and lower wings or plates 5 and6, respectively, having flanges 1 along their marginal edges andconnected together at one end by a neck portion 8 so as to provide aY-shaped channel 9 between the wings 5 and 6 through which the fastenerelements are guided when the slider is manipulated to open I or closethe fastener.

Various other objects and advantages of this On the outer side of theupper wing, there is arranged an elongated lug I0 upon which there ismounted a hollow sheet metal locking member I2 in the form of a capwhich fits over and around the lug and has a top wall and side walls l3and I4 and preferably end walls. This locking member is pivotallyattached to the lug ID at the upper end thereof, as at l5, preferably byprojections on the inner surfaces of the side walls which extend intoindentations in the opposed side surfaces of the lug. In the top surfaceof the lug there is anchored therein, a leaf spring l8 which extendsover the lug to the other side of the pivotal connection l5, with theextreme free end thereof bearing against the inner surface of the topwall of the locking member beyond the pivotal connection. On the freeend of the locking member or that end opposite that from the pivotalconnection, there is carried by the side wall I3, a locking projectionor prong I?! which is preferably an extension of this side wall. Thislocking prong extends normally into and through an opening 20 in the topwing 5 of the slider body into the channel 9 thereof due to the actionof the spring l8 which urges the looking prong into locking positionbetween any adjacent pair of fastener elements 3 in a wellknown manner,as shown in Figs. 2, 3, and 4.

There is provided a pull tab 2| which may be 3 of a convenient form and,in the present instance, this pull tab is shown as being substantiallyU-shaped having inwardly extending trunnion portions 22 and 23 which fitloosely in under the lower edges of the side walls I3 and M of thelocking member so as to embrace the same and so as to be disposed toeither side of the lug t and movable "relative to both the lockingmember and the lug. This pull tab is provided to manipulate the sliderand when so used to open the fastener the trunnions engage an inclinedsurface 24 on the inner side of the locking prong IQ of the side Walll3, as shown in Fig. '7, thereby moving the locking prong out ofengagment with the fastener elements.

According to the present invention, there is carried by the pull tab 2|adjacent each 'of the trunnion portions 22 and 23 thereof, hook-likeprojecting portions 25 and 26, respectively, which are adapted to extendnormally into corresponding openings 21 and 28, respectively, in the topwing of the slider body with one arranged to either side of the lug 10,as shown in Fig.6. These projecting portions are adapted to-hook overthe lower edged the openings 2] and 28, as shown in Figs. 2. and 5, whenthe pull tab is released so as-to hold thepull tab'and the pendant '29or other decorative device attached thereto in a suspended position withthe trunnion portions out of engagement with the inclined surface 24 ofthe side wallof the locking member thereby preventing the weight of thependant from operating on the locking'member tending to move the lockingmember out of its locked position. It will be understood that the bottomsides of the openings 21 and 28 are positioned -a distance from thelocking prong I 9 just sufiicient to keep the trunnion from contactingthe inclined surface 25 when the projections '25 and 28 are positionedin their'corresponding openings 2? and 28 so that the trunnions cannotact to tend to move the locking'memberto its unlocked position. It willbe seen that the lower edge of the side walls I B-and HI of thelockingmember tends to urge and hold the projections '25 and 26 into theircorresponding openings .21 and '28 due to the 'actionof the spring-l 8when thefpull tab is released, asshown in Fig, 2-. k

-In operation when the fasteneris being opened, the pullta b will'bedisposed, as shown in Fig. '1 of the drawings, with the slider beingmoved downwardly. In such position, it will be seen that the pull tab israised slightly upwardly out of parallelism with the slider body so asto be disposed at a slight angle thereto. ln moving the pull tab to-suchposition, the projections 25 and 26 are -moved out of theircorresponding openings 2'! and 28 so as to permit the trunnion portionof the pull tab to engage the inclined surface 24 of the locking memberthereby moving it out of engagement with the fastener elements. It ismaintained in such position until the pull tab is released and it againassumes its lockedposition, as shown in Fig. 2. 4

As a result of my invention, it will be seen that there is providedasimple and inexpensive means for efiectively holding the pull tab in asuspended position out of contact with the looking member whenthelocking member is in its locked position thereby eliminating anydanger of accidental downward movement of the slider along the fastenerelements in an opening (iirection.

While I have shown and described an embodiment which my invention mayassume in practice, it will be understood that this embodiment is merelyfor the purpose of illustration and description, and that other formsmay be devised within the scope of my invention as defined in theappended claims.

What I claim as my invention is:

1. A slider for slide fasteners of the class described, comprising aslider body, 2. lug projecting from one side of said slider body, alocking member pivotally connected to said lug at one end and having alocking projection on its other end, a .pull member connected to saidslider body for longitudinal movement therealong having trunnionportions engageable with said locking member for moving the same to itsunlocked position when a pulling force is exerted to said pullmember,resi1ient means for normally urging said'locking member to lockedposition when the pull member is released, and a projection extendingoutwardly from the face of said pull member adjacent the trunnionportions thereof, said slider bodyhaving an aperture in the wing thereofinto which said projection is adapted to extend when the pull member isdisposed in a suspended and locked position, said projection adapted torest on the lower wall of said aperture so that the weight of said pullmember or any member attached thereto will not tend to move thelocking-member to its unlocked position.

2. A sliderfor slide fasteners of the class described, comprising aslider body, a lug projecting from one side of said slider body, alooking member pivotally connected to said lug at one end and having alocking projection on its otherend, a pull member connected to saidslider body for longitudinal movement therealong having trunnionportions engageable with said looking member for moving the same to itsunlocked position when a pulling 'force is exerted to said pull member,resilient means for normally urging said locking member to lockedposition when the pul1 member is released, and a pair of projectionsextending outwardly from the trunn-ion portions of said pull member,said slider body having .a .pair of apertures in the wing thereof intowhich said projections are adapted to extend when the .pull member isdisposed in a suspended and locked position, said projections adapted torest on the lower wall of the respective aperture so that the weight ofsaid pull member or any member attached thereto will not tend to movethe locking member to its unlocked position.

'3. AIs'Iider for slide fasteners of the class described, as defined inclaim 1, including means carried by the locking member tending to forceautomatically the projections into the apertures by the action of thelocking member.

NOEL J. POUX.

REFERENCES CITED The following references are of record in "the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,966,457 Norton etal. :July 17,1934 1,977,528 Puc Oct. 16, 1934 2,280,968 Newhall Apr. '28, 1942FOREIGN PATENTS Number 7 Country Date 558,502 Great Britain of 1944828,314 France of 1938

